INSTALLATION – DX8200 BUS INTERFACE
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3.3.2 Inputs
The inputs for the DX8200 Bus Interface version are sent to the SC8000 Logic Unit, filtered,
elaborated, and then passed onto the scanners. They are called ENC, PS and PSAux.
ENC is the Encoder input. In PackTrack™ operating mode, it detects the conveyor speed.
PS is the main presence sensor. When active, this input tells the scanner to scan for a code
and that decoding can take place. The yellow LED (Figure C, 8) indicates the PS is active.
PSAux can be used in special applications.
All inputs are optocoupled and driven by a constant current generator; the command signal is
filtered through an anti-disturbance circuit which generates a delay of about 5 ms for PS and
PSAux and 500
µ
s for ENC.
REFER-
DX8200 Lonworks Input
Output Connectors
SC8000
Vext
20-30 Vdc
PS
12
Vext
20-30 Vdc
PSAux
14
Vext
20-30 Vdc
ENC
13
15
Figure 41 - DX8200 Bus Interface inputs
3.4 LAYOUTS
DX8200 Bus Interface models are connected to an SC8000 Logic Unit, the core of the
reading system, whose duty is to interpret data from each scanner and to perform the correct
barcode assignment to the parcel using the PackTrack™
operating mode.
The SC8000 controller collects data from each barcode scanner, calculating the correct
parcel to which the barcode must be assigned (if more than one parcel is in the reading
area).
The Host computer is connected to a configurable serial port of the SC8000.
External devices such as a presence sensor, an encoder and the supply unit are all
connected to the SC8000, which collects all signals driving them to all scanners.
The SC8000 is also connected to a Host PC.